WO2014164437A1 - Procédé permettant un débitage sélectif des pneus d'un véhicule - Google Patents

Procédé permettant un débitage sélectif des pneus d'un véhicule Download PDF

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Publication number
WO2014164437A1
WO2014164437A1 PCT/US2014/022422 US2014022422W WO2014164437A1 WO 2014164437 A1 WO2014164437 A1 WO 2014164437A1 US 2014022422 W US2014022422 W US 2014022422W WO 2014164437 A1 WO2014164437 A1 WO 2014164437A1
Authority
WO
WIPO (PCT)
Prior art keywords
components
tire
tires
properties
further processing
Prior art date
Application number
PCT/US2014/022422
Other languages
English (en)
Inventor
Richard J. Lee
Alex J. DOM
Alan M. Levine
Charles E. Spangler (Deceased)
Original Assignee
Lee Richard J
Dom Alex J
Levine Alan M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lee Richard J, Dom Alex J, Levine Alan M filed Critical Lee Richard J
Publication of WO2014164437A1 publication Critical patent/WO2014164437A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to a method of selectively breaking down vehicle tires in such a way as to permit subsequent processing of the individual portions to produce materials of different properties from different portions of the vehicle tire.
  • a scrap vehicle tire rather than being reduced to smaller shreds for further processing without consideration of different properties and different portions of the tire will be selectively severed for aggregating specific portions which have specific properties for further processing.
  • U.S. Patent 8,263,038 discloses a method of controlling volatiles in recycled carbon black. It discloses introducing vehicle tire shreds into a pyrolysis reactor with subsequent processing of the recycled carbon black emerging from the pyrolysis reactor by subjecting it to devolatilization. See also U.S. Patents 6,835,861 , 6,833,485 and 7,341 ,646 which disclose method and apparatus of pyrolysis of rubber and other hydrocarbon materials.
  • U.S. Patent 7,975,579 discloses apparatus for severing a tire along its tread in a plain generally parallel to the tire sidewalls.
  • U.S. Patent 5,235,888 discloses apparatus for severing the sidewalls from the tread. See also U.S. Patent 5,601,004.
  • U.S. Patent 5,555,782 discloses apparatus for cutting waste tires into pieces which can be stored in compact volumes for further use or disposal.
  • U.S. Patent 6,527,891 discloses a method of making steel belted planks by severing and assembling portions of tires. See also U.S. Patent 5,834,083 w r hich discloses severing sidewalls from tires and slitting remaining portions to transversely orient them in a generally flat position and subsequently connecting the strips for use in various construction and landfill abutments.
  • Most prior art focused on equipment for mechanical, thermal, or chemical breaking down of tires.
  • Current tire shredding equipment emphasizes reducing space taken up by waste tires and breaking tires down into smaller pieces that could be moved using mechanical conveying equipment and compacted or piled up more efficiently.
  • Current shreds are mixtures of all the parts of a tire or, if the parts, are separated with an understanding to be able to dispose of them in a compact fashion. No emphasis or effort is made to separate the waste into constituent parts.
  • the present invention relates to a recognition that by separating the tires into component parts and groups of different classes of materials advantage could be taken of the composition of the various materials.
  • a major advantage of this process is that the generated products are more valuable for recovering valuable resources for reuse than that generated by current processes and the material generated can be further broken down with less energy and less waste.
  • the method of the present invention contemplates severing a tire into at least three component parts, each of which has properties which differ from the properties of other component parts.
  • the scrap tire has the bead separated as a first product, the sidew r alls separated as a second product, the tread separated as a third product, the belt separated as a fourth product, and chipped treads provided as a fifth product.
  • Some of these products may advantageously be separately processed in a pyrolysis reactor with the reprocessed pyrolyzed component having different properties from the other reprocessed components from the same tire.
  • the figure illustrates an exploded view of an scrap tire to be recycled overlying a plurality components which may be separated in accordance with the present invention.
  • the upper portion shows the tire to be reclaimed underlying which is the tire bead, sidewall, tread, reinforcing belt separated from the tread, chipped treads which are the tread portions segmented into small pieces and a belt portion.
  • Typical passenger tires are generally composed of styrene-butadiene rubber cross-linked with sulfur through the vulcanization process and contains carbon black, and sometimes silica, as reinforcing agents. It also contains a percentage of natural rubber and sometimes other elastomers to adjust traction and abrasion resistance. In addition, it contains residual accelerators from the cure process, antioxidants, and antiozonants.
  • the tire is strengthened with steel or polymer cords to withstand mechanical stresses. These various components are engineered such that different parts of the tires contain components of different compositions. For example, the bead where the tire contacts the rim contains a rubber that is designed to seal and has steel wires within it.
  • the tread region is reinforced with a high reinforcing carbon black which is under- laid with a polymer (nylon or polyester) cord and/or a steel mesh.
  • the various parts of tires are designed, through the use of different polymer mixtures and reinforcing aides to have different properties. By removing the bead, separating the sidewalls, separating the tread, and the cord portion into separate streams, the components could be distributed into specific application as value-added ingredients.
  • Component streams would include at least bead, sidewalls, treads, and belt portion.
  • An example of such an enhanced application is to use shreds from the tread region as a feedstock in a pyrolysis, such as the one disclosed by Delta-Energy in U.S. Patent 6,833,485, 6,835,861 and 7,341,646), where the recovered recycled carbon black would contain higher reinforcing carbon black.
  • the tread would tend to have smaller carbon particles while the sidewalls w r ould have larger particles.
  • the tread particles would, therefore, provide more reinforcement than the sidewall particles.
  • the separated processed tread and sidewall component portions would have their respective carbon particles sized and used as separate feedstocks for a pyrolysis reactor to thereby produce two separate carbon blacks of different reinforcing properties.
  • the bead would typically be recycled steel which would be removed so as to be a separately marketable metal product while minimizing the wear and tear on the preprocessing equipment as the bead would not have to be processed by such equipment.
  • the present invention rather than merely severing vehicle tires into small portions without regard to the different characteristics of certain portions of the tire with respect to other portions, seeks to maximize the yield on reclaimed tires by segregating components of different properties into individual groups in order to maximize the benefits from reclamation.
  • Another example would be using the belt portions from tires to be incorporated into conveyer belts, for example.

Abstract

La présente invention se rapporte à un procédé permettant de traiter des pneus de véhicule, ledit procédé consistant à séparer les pneus en une pluralité de types de composants qui présentent des propriétés qui sont différentes les unes des autres et, en outre, à traiter chaque type de composant dans un procédé distinct des autres composants afin de produire des produits qui présentent des propriétés qui sont différentes des propriétés des produits qui sont produits à partir des autres composants. Selon un mode de réalisation, le traitement supplémentaire consiste à traiter séparément au moins deux types de composants par pyrolyse afin de produire du noir de carbone ayant différentes propriétés.
PCT/US2014/022422 2013-03-12 2014-03-10 Procédé permettant un débitage sélectif des pneus d'un véhicule WO2014164437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361777107P 2013-03-12 2013-03-12
US61/777,107 2013-03-12

Publications (1)

Publication Number Publication Date
WO2014164437A1 true WO2014164437A1 (fr) 2014-10-09

Family

ID=51658872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/022422 WO2014164437A1 (fr) 2013-03-12 2014-03-10 Procédé permettant un débitage sélectif des pneus d'un véhicule

Country Status (1)

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WO (1) WO2014164437A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966487A (en) * 1972-03-20 1976-06-29 The Firestone Tire & Rubber Company Pyrolization
US4240587A (en) * 1977-06-02 1980-12-23 Walter Letsch Method for recycling tires and similarly compounded materials to recover usable constituents
US4863106A (en) * 1988-10-13 1989-09-05 Tde, Inc. Process for low temperature comminution of scrap tires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966487A (en) * 1972-03-20 1976-06-29 The Firestone Tire & Rubber Company Pyrolization
US4240587A (en) * 1977-06-02 1980-12-23 Walter Letsch Method for recycling tires and similarly compounded materials to recover usable constituents
US4863106A (en) * 1988-10-13 1989-09-05 Tde, Inc. Process for low temperature comminution of scrap tires

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